SP425 folding knife sharpener. Features a diamond-coated, gritty surface on the steel blade and a durable nylon handle. Ideal to hone knives, scissors, axes, and other relevant tools. One side has a 400# diamond grit surface, and the other side has a 600# diamond grit surface. Features a double folding handle that allows for compact storage without damaging the grit. Textured nylon handle helps maintain a secure grip as you sharpen your tool.